Bobbin



Jan, 19 1926;

E. SWEENEY ET AL BOBBIN Original Filed Dec. 5. 1923 9 Edward J'weeney Gea rge ALHunsberger INVENTOR 0 BY M a ATTORNEY rmnied'ieaie, 192e,

UNITED STATES 1,510,534 P-ATENT- OFFICE.

EDWARD SWEENEY, or nonmsrown. AND GEORGE nunsnnnenn, or rorrsrown,

PENNSYLVANIA.

Application filed December 8, 1928, Serial No. 678,257. Renewed December9, 1925.

To all whom it may concern Be it known that we, EDWARD SWEENEY andGEORGE A. HUNSBERGER, citizens of the United States, residing atNorristown and Pottstown, respectively, in the county of Montgomery andState of Pennsylvania, have invented new and useful Improvements inBobbins, of which the-following is a speci1 fieation. I

This invention relates to bobbins, cones'or similar structures used inweaving or knitting, and an object of the. invention is to provide acovering for cone bobbins of the conventional type now in use, whichW111 eliminate'the large majority of the disadvantages andinconveniences contingent with yarn, improper unwinding and what is theuse of the present type of bobbins and cover, among which are thecatching of the thread, part1cularly in cases of thread, silk,

or artificial silk, upon rough places in the bobbin, causing rupturingof the threador commercially known as bunching of the yarn resultingin-loss of yarn and causing -im erfections in the articles being made.

nother object of this invention is to pro vide a cover as specifiedwhich provides an outer roughened surface which is resilient andembodies sfuflicient roughness to permit the proper winding of the yarnthereon or.

unwinding therefrom and which also em- '-bodies suflicient resiliency topermit yielding of minute portionsof the roughened surface to'preventthe catching or s lipping of the yarn thereon.

Other objects of the inventionwill appear in the following detaildescription, and in the accompanying drawings wherein:

Figure 11s a view artlyfin side eleva= tion and partly in section,showing one of,

the improved covers mounted upon a bottle bobbin.

- Figure-2-is a view partly in side eleva tion and partlyin section,showing one form of the improved cover mounted upon a cone bobbin,

- Figure 3is'a seetion, showingv parts in elevation, of a modified formof the bobbin.

Figure 4is a side elevation of a further modified formof bobbin cover.

- Referring more articularly to the draw-' ings, the bottle bo bin-1 "ofa proved t e is illustrated in Fi I and it isunderst re 1 oft edrawings, that in the usual a proved type of bottle bobbins. in use t esubstantially frustro-conical body 2 is made of wood and has its outersurface roughened to permitthe properwinding of the yarn thereon.However, in practical use, it has been found that in unwinding, the yarncatches on rough places in the outer sur-' face of the bobbin body 2 andbreaks, or causes bunching of the yarn on the bobbin, and consequently,results in loss of yarn and imperfections in the article being made. Toovercome such features, a cow ering 3 is made of soft rubber preferablyof what is commonly known as sponge rubber, and the outer surface of thec0"ering 3 is roughas shown at it-said roughness being provided by theirregularities in the rubber cause-:1 by the air holes and spongyconstruction of the rubber. The roughened surface 4 embodies sufiici'entroughness to permit the proper. winding of the yarn or thread thereon.However, the

resiliency of the rubber will permit yield- 3 action on the yarn is thesame as above.

mentioned, relative to the body 2 of the bottle bobbin and to overcomethis, the covering 6 which is also made of spongy rubber is provided. InFigure 2 of the drawings, the cover 6 entirely encloses the bob:

bin 5, and in such cases, it is necessary that the tip or apex ortion 7of the cover 6 have its outer surace smooth to permit the yarn to runoff? the bobbin, while the majoriortion of the outer cover 6 is rougheneas shown at 8, in the same manner as the cover 3 is roughened. L

In Figure 3 of the drawings, the modified form' of the bobbin'isshown inwhich the main conical body 10 is formed of hard rub-- ber and the outersurface of the hard rubber has a coverin or layer 11 of spongy rubber'thereon, w ich is vulcanized to the outer surlface of the bo'dy lOroviding'substantia ing thereof and prevent the yarn from catcha onepie'ce bObblIl comprising the silient or pliable outer portion. Theouter surface of the spongy or resilient portion 11 is roughened, asshown at 12, all over, with the exception of the outer surface of thetip or apex portion 13 which is smooth to permit the yarn to run oifthebobbin freely.

In Figure 4 of the drawings, a further modified form of the. bobbinstructure is shown in which the cover which is made of soft spongyrubber is shown as tacked, or otherwise suitably attached to the cone21. In this form the covering 20 may be cut from a sheet of spongyrubber and either tacked, stitched or otherwise suitably attached to thecone bobbin 21, and the covering 20 is shown shorter. than the conebobbin 21 leaving the tip or apex 22 of the bobbin free from thecovering, so as to facilitate the running off of the yarn from thebobbin.

It is to be understood, that in the construction of the moulded forms ofcovering, as shown in Figure 2 of the drawing, the apex of the bobbinproper, may be left free from the covering, as shown in Figure 4 of thedrawings, without departing from the spirit of this invention, and thesame is also true of making thetype of bobbin, as illustrated in Figure3 of the drawings.

It is, of course, to be understood, that the invention may beconstructed in various other manners and the parts associated indifferentrelations, and therefore, we do not desire to be limited in anymanner, except as set forth in the claims hereunto appended.

What we claim is:

1. As a new article of manufacture, a cover for yarn bobbins formed ofsponge rubber and having a rough outer surface.

2. As a new article of manufacture, a cover for yarn bobbins formed ofsponge rubber and having a rough' outer surface, the outer surface ofthe apex portion of said covering being smooth.

3. As a new article of manufacture, a bobbin comprising abody formed ofa compound of hard rubber and having an outer covering of resilientsponge rubber mounted thereover.

4. As a new article of manufacture, a bobbin comprising a body formed ofa compound of hard rubber and having an outer covering of resilientsponge rubber mounted thereover, and vulcanized thereto.

5. As a new article of manufacture, a bobbin comprising a body formed ofa compound of hard rubber and having an outer covering of resilientsponge rubber mount-- ed thereover and vulcamzed thereto, the

outer surface of said covering being rough,

the apex portion of the outer surface of said covering being smooth.

In testimony whereof we affix our signatures.

EDWARD SWEENEY. GEORGE HUNSBERGER'.

